#397FDB

#397FDB

Color Values

HEX

#397FDB

RGB

57, 127, 219

HSL

214.1, 69.2%, 54.1%

HSV

214.1, 74.0%, 85.9%

CMYK

74.0%, 42.0%, 0.0%, 14.1%

OKLCH

0.5984 0.157 256.4

Properties

Cool Light Nearest: Navy Blue

Color Harmonies

Complementary

#397FDB

#DB9539

Analogous

#39D0DB

#4439DB

#397FDB

Triadic

#397FDB

#DB397F

#7FDB39

Split Complementary

#397FDB

#DB4439

#D0DB39

Tetradic

#397FDB

#DB39D0

#DB9539

#39DB44

Color Blindness Simulation

Original

#397FDB

Protanopia

#5758C5

Deuteranopia

#534EBF

Tritanopia

#3CB3AF

Achromatopsia

#777777

CSS Usage

background-color: #397FDB;
color: #397FDB;
border-color: #397FDB;
Nearest Tailwind: Blue 500 #3B82F6

Tailwind Shades

50
#F3F7FC
100
#E3ECF8
200
#C3D8F4
300
#97BCEC
400
#5F98E2
500
#2773D8
600
#1F5CAD
700
#194A8A
800
#143A6C
900
#122C4F
950
#0C1C32

Contrast Checker

Text on white

4.01:1

AA Fail AAA Fail

Text on black

5.23:1

AA Pass AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026